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Dendrochronology/Sapwood

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From: Steve Rasmussen City: Vernal, UT
Since sapwood is live wood, do its growth rings continue to grow wider?
	Extension Message From: Jay Hayek Extension Specialist, Forestry Department of Natural Resources and Environmental Sciences jhayek@illinois.edu
Think of it this way: sapwood is still conductive (water and nutrients), but the annual growth rings found in sapwood do not change -- they do not continue to grow in size (except for the the current year's latewood being laid down by the vascular cambium. Older sapwood eventually turns into heartwood.
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